linux-kernel - Re: process 'stuck' at exit.

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Message-ID: <20131211005550.GA20404@redhat.com>
Date:	Tue, 10 Dec 2013 19:55:50 -0500
From:	Dave Jones <davej@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Oleg Nesterov <oleg@...hat.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mel Gorman <mgorman@...e.de>
Subject: Re: process 'stuck' at exit.

On Tue, Dec 10, 2013 at 07:23:30PM -0500, Dave Jones wrote:
 
 > I was distracted by seeing all the other threads exiting, so I was only looking at
 > what this one had already done.
 
another thing that distracted me was that /proc/10818/stack was just showing that

[<ffffffffffffffff>] 0xffffffffffffffff

output.

For my own education, what causes that ?
How come it didn't show the same trace I saw when I sysrq-t'd ?

	Dave
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